don't set write_subdev for pcidas-4020

diff --git a/comedi/drivers/cb_pcidas64.c b/comedi/drivers/cb_pcidas64.c
index 015690bea49ad6500ac596772f63725cf6ef24fd..56e8454a5e944cfbbc49f7136a844ff7e19b30cd 100644 (file)
--- a/comedi/drivers/cb_pcidas64.c
+++ b/comedi/drivers/cb_pcidas64.c
@@ -1387,7 +1387,6 @@ static int setup_subdevices(comedi_device *dev)
        s = dev->subdevices + 1;
        if(board(dev)->ao_nchan)
        {
-               dev->write_subdev = s;
                s->type = COMEDI_SUBD_AO;
                s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_GROUND;
                s->n_chan = board(dev)->ao_nchan;
@@ -1397,6 +1396,7 @@ static int setup_subdevices(comedi_device *dev)
                s->insn_write = ao_winsn;
                if(ao_cmd_is_supported(board(dev)))
                {
+                       dev->write_subdev = s;
                        s->do_cmdtest = ao_cmdtest;
                        s->do_cmd = ao_cmd;
                        s->len_chanlist = board(dev)->ao_nchan;
@@ -1405,7 +1405,6 @@ static int setup_subdevices(comedi_device *dev)
        } else
        {
                s->type = COMEDI_SUBD_UNUSED;
-               dev->write_subdev = NULL;
        }
 
        // digital input